A morphometric analysis of Arceuthobium campylopodum, A. laricis, and A. tsugense\ua0(Viscaceae)

Volume: 97Start Page: 200End Page: 21

Intelligent Sensor Technology: A ‘Must-Have’ for Next-Century Marine Science

This section describes the experiences of six years of operation of permanently installed fully remote-controlled marine sensors and experimental facilities in coastal waters of the southern North Sea and in the polar fjord system “Kongsfjorden” at Svalbard from 2012 to 2018. The actual state and the challenges in using state-of-the-art IT based sensor technology in shallow water areas are summarized as well as the main shortcomings and pitfalls when modern sensor technology meets the rough conditions of coastal areas in temperate and polar waters. I specifically focus on the two cabled COSYNA/MOSES observatories which the Alfred-Wegener-Institut, Helmholtz Centre for Marine- and Polar Research (AWI) and the Helmholtz-Centre- Geesthacht (HZG) operate together in the southern North Sea and in the Arctic Ocean (Fischer et al. in COSYNA underwater nodes, pp 31–34 [8]; Baschek et al. in Ocean Sci 13:379–410 [1])

The Epi-to-Bathypelagic Ichthyofauna of the Gulf of Mexico: Recent Surveys Reveal Exceptional Diversity and Endemism, with 180 New Species Records

An ongoing research program has investigated the ichthyofaunal structure and dynamics of the oceanic northern Gulf of Mexico (GoM), from the surface to 1500 m depth. Prior to 2011 there was no inventory of the GoM bathypelagial (\u3e1000 m depth) and that of the mesopelagial (200-1000 m) was largely limited to the eastern GoM. Extensive sampling and analysis since that time has revealed an exceptionally speciose oceanic fish assemblage with inherent pelagic endemicity. Of the 794 fish species identified to date, 180 are new records for the GoM, including one newly described and 21 putative undescribed species. This increases the total fish species number for the entire GoM marine ecosystem by over 10%. Over half of all known fish species in the GoM use the oceanic habitat for part or all of their lives. The GoM now ranks among the most-speciose oceanic ichthyofaunal assemblages known in the World Ocean. This ranking likely results from: 1) the ecotonal nature of the oceanic GoM (low-latitude input, winter cooling); 2) high (non-limiting) oxygen at depth; 3) substantial use of pelagic habitat by juvenile deep-demersal and coastal fishes; 4) sampling intensity (the GoM stands as the world’s most-studied bathypelagic system); and 5) the integration of morphological and genetic methodology used to increase taxonomic accuracy and precision. Despite extensive sampling, the species accumulation curve has not reached asymptote; more species will likely be recorded with more sampling